With Heroes gearing up production for the third season as we speak, new cast members are still being added to the NBC sci-fi drama. One of the latest additions to the series is Bruce Boxleitner, actor best known for his role as Capt. John Sheridan on the sci-fi series Babylon 5.

Also known for his leading roles on television series like How the West Was Won, Bring 'Em Back Alive, and Scarecrow and Mrs. King, Boxleitner starred in the Kenny Rogers as The Gambler trilogy and made appearances on Judith Krantz's Till We Meet Again and She Spies.

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According to TV Guide, the 58-year-old actor has landed a top-secret recurring role that was “originally modeled after [Republican and Presidential Candidate] Sen. John McCain.” The character has since been reconceived, and is expected to be sharing scenes with a female series regular.

Based on the casting scoop, many are speculating that Boxleitner will be playing a politician on the show. This means that he will likely play the other second character previously hinted to have been added to Heroes' third season.

As reported a month ago, two new recurring roles have been cast on Heroes, both of which are expected to debut in the premiere of the third season. These include “Joy,” who is described to be in her early twenties and is “quick on her feet,” and “Senator Robert Malden,” who is in his 50s and is a political straight shooter.

We now know that the character Joy has been replaced with a Speedster named Daphne, who will be portrayed by Friday Night Lights actress Brea Grant. With Boxleitner cast as a politician on the show, is there any doubt he'll be playing Senator Robert Malden?

Fans can catch the return of Heroes on September 22 with a one-hour clip show at 8pm, followed by the two-hour season 3 premiere at 9pm on NBC.